Re: A89: Re: help me too please!
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Re: A89: Re: help me too please!
besides the pi symbol, pi can be represented by at least one summation,
and there are some other formulas as well.
On Wed, 19 May 1999 16:24:21 -0400 "Scott Noveck" <noveck@pluto.njcc.com>
writes:
>
>It seems we don't understand the nature of the term "exact" here.
>
>"Exact" answers include radicals and irrational numbers exactly as
>they are.
>Pi is exact -- 3.1415926535 (off the top of my head) is NOT exact. It
>is a
>decimal approximation of the number. The only exact representation of
>Pi is
>the Pi symbol - it's an irrational number than can only be
>approximated by a
>decimal. Same thing goes with simplified square roots (2, 3, 5, 6,
>etc.)
>
>The answer that you want is what we call a "decimal approximation".
>It is
>not the exact answer, but very close to it. Pi is not 3.1415926535,
>but
>it's within trillionths (1/1,000,000,000,000) of the exact answer.
>To
>obtain a decimal approximation, either set the MODE to APPROX or,
>instead of
>just pressing enter, press <> Enter (that's diamond-enter). You'll
>see the
>squigley equal sign as the diamond function of the enter button - this
>means
>"approximately equals".
>
>So, in summation - you're wrong, the calculator's right. I suggest
>you read
>through the manual a bit more or go buy a cheaper calculator (such as
>the
>83) if you don't need the 89's advanced symbolic abilities.
>
>Anyone know if Ray Kremer is on this list? We should add my little
>sermon to
>the FAQ =)
>
>> that doesnt give an exact answer
>>
>> Robruss82@aol.com wrote:
>>
>> > You don't need to graph the equation on the TI-89 to get the
>answers to
>a
>> > quadratic equation. Just look for the Solve( function in your
>menu,
>and
>> type
>> > in the equation and the variable, and press Enter to get the
>answer.
>> >
>> > For Example:
>> > Solve(x^2+6x-9=0, x) and it will give you the two answers.
>> >
>> > ------
>> > Robert
>> > ------
>> > EMAIL: Robruss82@aol.com
>> > robruss@mailcity.com
>> > robruss@hotmail.com
>> > AIM: Robruss82
>> > mIRC: MindFrost
>> > ICQ #: 34374528
>> > WEBPAGE: http://browse.to/FrontPage
>
>
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